1242058577 has 6 divisors (see below), whose sum is σ = 1251540354. Its totient is φ = 1232582960.

The previous prime is 1242058561. The next prime is 1242058583. The reversal of 1242058577 is 7758502421.

It can be written as a sum of positive squares in only one way, i.e., 1097000641 + 145057936 = 33121^2 + 12044^2 .

It is not a de Polignac number, because 1242058577 - 2⁴ = 1242058561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242058537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411002 + ... + 414012.

It is an arithmetic number, because the mean of its divisors is an integer number (208590059).

Almost surely, 2^1242058577 is an apocalyptic number.

It is an amenable number.

1242058577 is a deficient number, since it is larger than the sum of its proper divisors (9481777).

1242058577 is an frugal number, since it uses more digits than its factorization.

1242058577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6159 (or 3148 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 41.

The square root of 1242058577 is about 35242.8514311768. The cubic root of 1242058577 is about 1074.9312599276.

The spelling of 1242058577 in words is "one billion, two hundred forty-two million, fifty-eight thousand, five hundred seventy-seven".